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Walker 21399 Exhaust Muffler
Overview of Walker Quiet-Flow SS Exhaust Muffler 21399
The Walker Quiet-Flow SS Exhaust Muffler 21399 is designed specifically for Chevrolet Impala and Monte Carlo models. Engineered with durable stainless steel and an aluminized finish, this muffler offers reliable performance and corrosion resistance for your vehicle's exhaust system.
- Inlet outside diameter: 2.25 inches
- Outlet outside diameter: 2.5 inches
- Oval-shaped muffler body with 11-inch width and 5.5-inch height
- Overall length of 29 inches with a 15-inch body length
- Single inlet and outlet with offset inlet configuration
- Constructed from stainless steel with aluminized finish for durability
- Specific fit for Chevrolet Impala and Monte Carlo
- Combination muffler type with center outlet tip
Detailed Product Description
The Walker Quiet-Flow SS 21399 exhaust muffler features a combination muffler design that balances sound reduction and exhaust flow efficiency. Its oval shape and precise dimensions, including an 11-inch body width and 5.5-inch height, allow for a tailored fit in the exhaust system of Chevrolet Impala and Monte Carlo vehicles. The muffler includes a 2.25-inch offset pipe connection inlet and a 2.5-inch center outlet tip, ensuring compatibility with the factory exhaust layout. The stainless steel body with an aluminized finish provides resistance to rust and corrosion, extending the service life of the muffler under typical driving conditions.
Walker Quiet-Flow SS Product Line Features
The Quiet-Flow SS line by Walker is known for its stainless steel construction and aluminized finish, designed to offer a balance of durability and noise reduction. This product line focuses on providing specific fit mufflers that meet OEM specifications for various vehicle models, including Chevrolet Impala and Monte Carlo. The 21399 muffler exemplifies the Quiet-Flow SS commitment to quality materials and precise fitment.
Common Applications and Problem Solving
- Replacement for worn or damaged mufflers on Chevrolet Impala and Monte Carlo
- Reduction of excessive exhaust noise and vibration
- Restoration of proper exhaust flow and backpressure
- Prevention of rust and corrosion-related exhaust leaks
- Improvement of overall exhaust system durability
Installation Notes and Tips
This muffler is designed for specific fitment on Chevrolet Impala and Monte Carlo models, ensuring a direct replacement without modification. The offset inlet and center outlet tip require alignment with existing exhaust piping. Professional installation is recommended to ensure proper sealing and secure mounting. Verify inlet and outlet diameters (2.25 inches inlet, 2.5 inches outlet) match your vehicle’s exhaust system before installation.
Quality Assurance and Warranty
Walker manufactures the Quiet-Flow SS 21399 muffler with high-grade stainless steel and aluminized finish to resist corrosion and wear. While specific warranty details are not provided here, Walker products typically meet or exceed OEM standards for durability and performance. For warranty information, consult the manufacturer or authorized distributor.
| Brand | Walker |
|---|---|
| Part Number | 21399 |
| Position | Quiet-Flow SS |
| Inlet Outside Diameter | 2.25 |
| Outlet Outside Diameter | 2.5 |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Body Width | 11 |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 29 |
| Body Height | 5.5 |
| Body Length | 15 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Outside Diameter | 2.25 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 3.75 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Outside Diameter | 2.5 |
| Outlet 1 Type | Tip |
| Outlet Configuration | Center |
| Outlet Type | Tip |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Chevrolet | Impala | Base | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Chevrolet | Impala | SS | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Chevrolet | Impala | LS | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Chevrolet | Impala | Base | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Impala | SS | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Impala | LS | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Chevrolet | Impala | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | Chevrolet | Impala | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2001 | Chevrolet | Impala | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2001 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2001 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2000 | Chevrolet | Impala | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2000 | Chevrolet | Impala | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2000 | Chevrolet | Monte Carlo | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.